Dynamic allocate string array

[huohaodian@gmail.com]

Hi,

I have a char * mFileList[];

how can i dynamically allocate it to save some strings?

Thanks in advance

[huohaodian@gmail.com]

Re: Dynamic allocate string array

On Feb 28, 2:53 pm, huohaod...@gmai l.com wrote:

Hi,
>
I have a char * mFileList[];
>
how can i dynamically allocate it to save some strings? I'd like to allocate it to and array of POINTERS to char strings, some thing like char *mFileList[1000]
>
Thanks in advance

[Victor Bazarov]

Re: Dynamic allocate string array

huohaodian@gmai l.com wrote:

I have a char * mFileList[];
>
how can i dynamically allocate it to save some strings?

std::vector<std ::stringmFileLi st;

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

[huohaodian@gmail.com]

Re: Dynamic allocate string array

On Feb 28, 3:12 pm, "Victor Bazarov" <v.Abaza...@com Acast.netwrote:

huohaod...@gmai l.com wrote:

I have a char * mFileList[];

>

how can i dynamically allocate it to save some strings?

>
std::vector<std ::stringmFileLi st;
>
V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

I tried char * mFileList[] = new char[index]; but got a syntax error.

[Victor Bazarov]

Re: Dynamic allocate string array

huohaodian@gmai l.com wrote:

[..]
I tried char * mFileList[] = new char[index]; but got a syntax error.

char **mFileList = new char*[size];

But let me reiterate, do NOT presume managing dynamic memory is
easy or recommended. Try to stick to standard containers before
you learn enough. Do

std::vector<std ::stringmFileLi st(size);

It's basically all you need, trust me.

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

[huohaodian@gmail.com]

Re: Dynamic allocate string array

On Feb 28, 3:46 pm, "Victor Bazarov" <v.Abaza...@com Acast.netwrote:

huohaod...@gmai l.com wrote:

[..]
I tried char * mFileList[] = new char[index]; but got a syntax error.

>
char **mFileList = new char*[size];
>
But let me reiterate, do NOT presume managing dynamic memory is
easy or recommended. Try to stick to standard containers before
you learn enough. Do
>
std::vector<std ::stringmFileLi st(size);
>
It's basically all you need, trust me.
>
V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

Thanks a lot for the help

[Default User]

Re: Dynamic allocate string array

huohaodian@gmai l.com wrote:

Hi,
>
I have a char * mFileList[];

This is an invalid declaration. You must either have an initializer
list or give that array a dimension.

how can i dynamically allocate it to save some strings?

Do what Victor said. Use the tools that have been developed to aid the
programmer.




Brian

[Jim Langston]

Re: Dynamic allocate string array

huohaodian@gmai l.com wrote:

Hi,
>
I have a char * mFileList[];
>
how can i dynamically allocate it to save some strings?
>
Thanks in advance

If possible, try std::vector<std ::stringmFileLi st;
If not possible, try std::vector<cha r*mFileList;

The std::vector should be as effective as anything manaul, such as new
char*[count] and with a known value you can do:

std::vector<cha r*mFileList( count );
Which will create a dynamic array of count elements of char*.

Still, std::vector<std ::stringis much prefered, but it really depeneds on
your code.


--
Jim Langston
tazmaster@rocke tmail.com